HornBlasters Crazy Loud Small Compact 2 Trumpet Spocker, 3 Trumpet Rhino, and 3 Liter Air Source Unit Combo Air Horn Kit Crazy Loud Spocker Rhino Combo Smooth Chrome Finish Spocker/Smooth Black Finish Rhino Horns Easy Installation with all Hardware Included Unique Sounding Duo with Deep and High Tunes Combined 3 Liter Air Source Unit Running at 110PSI